Itineraries flown on 20+ days in the Jun 6 – Jul 31, 2026 schedule · each leg’s record Aug 2025 – Jul 2026

Connect in the morning. The same one-hour layover misses 5% of the time at 7 am and 29% of the time at 8 pm.

Nonstops (seasonal or thin)


American	BIL	DFW	2h 52m	84%	0.6%	691	Flying now

Best connections, one ticket

Most reliable Quickest (80%+ on time)

Ranked by chance you reach Dallas-Fort Worth on time. Total trip = scheduled departure to arrival, layover included (Dallas-Fort Worth is 1 h ahead of Billings). Layovers up to 4 hours. Pick a connection for the details.


United Details →	BIL 05:00 → DEN 06:53UA 5829 · flown by SkyWest	2h 47m Denver	DEN 09:40 → DFW 12:48UA 355	6h 48m	97%	91%
Delta Details →	BIL 05:20 → SLC 06:42DL 1360	3h 08m Salt Lake City	SLC 09:50 → DFW 13:33DL 2800	7h 13m	99%	83%
Alaska Details →	BIL 13:45 → SEA 14:55AS 2055 · flown by Horizon	3h 01m Seattle	SEA 17:56 → DFW 23:59AS 424	9h 14m	98%	78%
Alaska Details →	BIL 19:22 → SEA 20:35AS 2084 · flown by Horizon	2h 28m Seattle	SEA 23:03 → DFW 05:02 +1AS 542	8h 40m	98%	77%
United Details →	BIL 10:40 → DEN 12:33UA 5463 · flown by SkyWest	1h 12m Denver	DEN 13:45 → DFW 16:51UA 578	5h 11m	99%	74%
United Details →	BIL 14:25 → DEN 16:15UA 478	2h 38m Denver	DEN 18:53 → DFW 21:59UA 1565	6h 34m	96%	65%
American Details →	BIL 12:53 → ORD 16:54AA 3428 · flown by Envoy	2h 32m Chicago	ORD 19:26 → DFW 22:08AA 3544 · flown by Envoy	8h 15m	94%	65%
United Details →	BIL 16:10 → DEN 18:03UA 5590 · flown by SkyWest	2h 50m Denver	DEN 20:53 → DFW 23:59UA 2239	6h 49m	81%	55%
Tight connection: often missed
United Details →	BIL 18:00 → DEN 19:52UA 4758 · flown by SkyWest	1h 01m Denver	DEN 20:53 → DFW 23:59UA 2239	4h 59m	71%	47%
United Details →	BIL 16:10 → DEN 18:03UA 5590 · flown by SkyWest	50m Denver	DEN 18:53 → DFW 21:59UA 1565	4h 49m	32%	22%

Same layover, different day-part

How often the first flight arrives too late to connect (45 min minimum), for one-ticket layovers of 45–80 minutes.

Morning

SLC · 1h 13m · leaves 05:20 5%

Afternoon and evening

DEN · 1h 01m · leaves 18:00 29%

Delays build through the day, so an afternoon first leg eats the layover. A short connection is fine early in the morning and a gamble later on.

Mixing airlines

One ticketMiss it and the airline rebooks you; bags go through. 45 min is enough.

Separate ticketsMiss it and you buy a new ticket. Re-check bags, clear security again: we require 90 min.


Alaska AS 2247 BIL 06:00 → SEA Delta DL 803 SEA 09:15 → DFW Connection details →	2h 03m	8h 17m	96%	77%
United UA 5829 BIL 05:00 → DEN American AA 1523 DEN 09:04 → DFW Connection details →	2h 11m	6h 07m	96%	76%
Delta DL 4038 BIL 11:50 → SLC Frontier F9 3278 SLC 15:41 → DFW Connection details →	2h 15m	6h 49m	98%	73%

Rank all connections, any airlines →

Regional partners count as the airline that sells them: SkyWest flying Delta Connection is one Delta ticket.

How these are worked out. Makes the connection: share of the last year’s flights where the first flight arrived with at least 45 minutes to spare (90 on separate tickets). Arrives on time: first flight not cancelled × connection made × second flight not cancelled and arriving within 15 minutes. Not yet counted: the second flight also leaving late (which helps), gate-to-gate distance at the hub, and rebooking after a missed connection.

About this data: US DOT on-time records, Aug 2025 – Jul 2026, all US airlines; regional flights count under the airline that sells them. Schedules (which flights and connections exist, and their times) are as of Jun 6 – Jul 31, 2026; seasonal flights outside that window aren’t ranked. Rebuilt monthly. JSON